Audio augmented reality system

ABSTRACT

Techniques for online information search and retrieval for a query including a digital audio waveform. In an aspect, an audio waveform is received and digitized by at least one of a plurality of audio input devices. The digitized audio waveforms are transmitted to a central processing unit, which formulates and submits a query to an online engine. The formulated query may include the at least one digital audio waveform. The online engine retrieves one or more online results relevant to the formulated query. The online results may include one or more relevant visual results, and/or one or more relevant audio results. The retrieved results are served in real-time back to a user, via a device having audio output capability, and/or a device having visual data output capability.

BACKGROUND

With the advent of technology for processing environmental input andcommunicating information in real time, the use of augmented realitysystems in consumer, business, academic, and research settings will beincreasingly widespread. In an audio augmented reality system, users maybe presented with real-time information through one or more audiochannels, e.g., earphones, speakers, or other audio devices. To enhancethe performance of audio augmented reality systems, it would bedesirable to provide techniques to increase the relevance and accuracyof the real-time information presented.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a first scenario showing various aspects of thepresent disclosure.

FIG. 2 illustrates an exemplary sequence of functional blocksillustrating certain aspects of the present disclosure.

FIG. 3 illustrates an exemplary embodiment of operations performed by anaudio input and/or output device locally available to the user.

FIG. 4 illustrates further aspects of an audio augmented reality systemfor recovering and retrieving relevant information.

FIG. 5 shows an illustrative correspondence between an exemplaryformulated query and exemplary retrieved results.

FIG. 6 illustrates further aspects of the augmented reality system forvisually displaying information relevant to the received digital soundwaveforms.

FIG. 7 illustrates an exemplary application of the techniques describedhereinabove with reference to an audio augmented reality system tospecific scenario.

FIG. 8 illustrates an exemplary embodiment of a method according to thepresent disclosure.

FIG. 9 illustrates an exemplary embodiment of an apparatus according tothe present disclosure.

FIG. 10 illustrates an exemplary embodiment of a device according to thepresent disclosure.

DETAILED DESCRIPTION

Various aspects of the technology described herein are generallydirected towards techniques for search and retrieval of onlineinformation responsive to a query that includes a digital audiowaveform. In particular, the query is submitted to an online engine, andmay include a plurality of digital audio waveforms. One or more onlineresults relevant to the formulated query are retrieved, and presented inaudio and/or visual format to the user in real-time. Based on userfeedback, the relevance of online results may be improved over timeusing machine learning algorithms.

The detailed description set forth below in connection with the appendeddrawings is intended as a description of exemplary means “serving as anexample, instance, or illustration,” and should not necessarily beconstrued as preferred or advantageous over other exemplary aspects. Thedetailed description includes specific details for the purpose ofproviding a thorough understanding of the exemplary aspects of theinvention. It will be apparent to those skilled in the art that theexemplary aspects of the invention may be practiced without thesespecific details. In some instances, well-known structures and devicesare shown in block diagram form in order to avoid obscuring the noveltyof the exemplary aspects presented herein.

FIG. 1 illustrates a first scenario 100 showing various aspects of thepresent disclosure. Note scenario 100 is shown for illustrative purposesonly, and is not meant to limit the scope of the present disclosure,e.g., to any particular types of audio signals that can be processed,devices for capturing or outputting audio input, specific knowledgeareas, search results, any types of information shown or suggested, orany illustrative scenario such as bird-watching or any other specificscenario.

In FIG. 1, a plurality of devices is shown, including active earbuds 120(including left 120 a and right 120 b earbuds), smartphone 130,smartwatch 140, laptop computer 150, etc. User 110 is illustrativelydepicted as listening to the audio output of active earbuds 120. In anexemplary embodiment, each of (left and right) active earbuds 120 mayinclude a built-in microprocessor (not shown). Earbuds 120 may beconfigured to sample live audio, and, using the built-in microprocessor,process the sampled audio, and further generate audio output thatmodifies, enhances, or otherwise augments the live audio also beingheard by the user in real-time.

It will be appreciated that any of the devices shown may be equippedwith the capability to generate audio output for user 110, and/orreceive audio input from the environment of user 110. For example, toreceive audio input, active earbuds 120 may be provided with built-inmicrophones or other types of sound sensors (not shown in FIG. 1),smartphone 130 may include microphone 132, smartwatch 140 may includemicrophone 142, laptop computer 150 may include microphone 151, etc.

In first illustrative scenario 100, user 110 may be on a walk while inpossession of any or all of devices 120, 130, 140, and/or 150. User 110may happen to encounter a bird 160 singing a bird song 162. User 110 mayperceive bird 160 through his or her visual and/or audio senses, i.e.,sight and/or sound. In such a scenario, user 110 might desire to obtainadditional information regarding bird 160 and/or bird song 162, e.g.,identity and other information of the bird species, location of the birdrelative to user 110 (e.g., if only song 162 were heard but bird 160 wasnot visible), etc. Note the example of bird-watching is described forillustrative purposes only, and is not meant to limit the scope of thepresent disclosure to any particular types of sounds or information thatmay be processed. In alternative exemplary embodiments, any soundwaveforms may be accommodated, including, but not limited to, music(e.g., identification of music type, band, performers, etc.), speech(e.g., identification of speaker, natural language comprehension,translation, etc.), artificial (e.g., identification of sirens,emergency calls, etc.) or natural sounds, etc. Such alternativeexemplary embodiments are contemplated to be within the scope of thepresent disclosure.

Furthermore, devices 120, 130, 140, 150 need not all be in thepossession of user 110. For example, while earbuds 120 may be in thepossession of and in the vicinity of user 110, laptop computer 150 maynot belong to the user, and/or may generally be located within oroutside the immediate vicinity of user 110. According to the techniquesof the present disclosure, it may generally suffice for the devices tobe in the same general environment of the user, e.g., such that thedevices may each provide useful input on particular sounds perceived byuser 110.

It will be appreciated that any of devices 120, 130, 140, 150 maypossess the capability to connect to a local network or to the WorldWide Web, while user 110 is observing bird 160 or listening to bird song162. User 110 may utilize such connectivity to, e.g., access the networkor the Web to retrieve the desired information on bird 160 or bird song162. In an exemplary embodiment, user 110 may verbally articulate orotherwise input a query, and any of devices 120, 130, 140, 150 maysubmit the formulated query to one or more databases located on suchnetwork or on the World Wide Web, to retrieve relevant information. Inan exemplary embodiment, such databases may correspond to a searchengine, e.g., an Internet search engine.

It will be appreciated, however, that in certain scenarios, if user 110does not possess specialized knowledge regarding a subject, then itwould be difficult for user 110 to adequately formulate a query toobtain the desired information from an online search engine, even ifsuch a search engine were accessible through, e.g., devices 130, 140,150. For example, if user 110 had seen bird 160 and identified certaincolors or other characteristics of the bird, then user 110 may be ableto formulate a suitable text query for a search engine to identify bird160. However, if user 110 only hears bird song 162 without having seenbird 160, then it would be difficult for user 110 to formulate asuitable text query. User 110 might also encounter a similar dilemmawhen presented with other types of sounds, e.g., unfamiliar or barelyaudible languages spoken by human speakers, unfamiliar music which user110 desires to identify, etc.

Accordingly, it would be desirable to provide a system that canautomatically retrieve and present information relevant to soundsperceived by a user in his or her environment, without requiring theuser to explicitly formulate a query for such information.

In an exemplary embodiment, one or more devices in the user'senvironment may receive audio input corresponding to the sound perceivedby the user. For example, any or all of devices 120, 130, 140, 150 maypossess audio input capability, and may capture bird song 162 using itscorresponding audio input mechanism (e.g., built-in microphone of activeearbuds 120, microphone 132 of smartphone 130, etc.). The received audioinput may be communicated from the receiving devices to a centraldevice, which may automatically formulate a query based on the receivedsound waveforms and submit such query to an online search engine (alsodenoted “online engine” herein). Based on the formulated query, theonline engine may retrieve information identifying bird 160, along withspecific characteristics of bird song 162 received by the devices, usingthe techniques described hereinbelow.

The retrieved information may then be presented to user 110 through oneor more presentation modalities, including, e.g., synthesized voiceaudio through earbuds 120, and/or audio output by speakers (not shown)present on any of devices 130, 140, 150, and/or visual presentations onany of devices 130, 140, 150 possessing an accommodating display. Forexample, as shown on the display of smartphone 130, graphic and text 132identifying bird 160 may be displayed, along with other in-depth textualdescription 134.

Further described hereinbelow are techniques for implementing a systemhaving the capabilities described hereinabove. FIG. 2 illustrates anexemplary sequence 200 of functional blocks illustrating certain aspectsof the present disclosure. Note FIG. 2 is shown for illustrativepurposes only, and is not meant to limit the scope of the presentdisclosure. For example, sequence 200 need not be performed by a singledevice, and the operations described may be distributed across devices.Furthermore, in alternative exemplary embodiments, any blocks insequence 200 may be modified, omitted, or rearranged in differentsequence. Such alternative exemplary embodiments are contemplated to bewithin the scope of the present disclosure.

In FIG. 2, at block 210, sound waveforms are received through one ormore devices. In an exemplary embodiment, such devices may include anydevice having audio input and sound digitization capability, that may bein communication with the other devices. For example, in scenario 100,such devices may include any or all of devices 120, 130, 140, 150.

At block 220, the digital sound waveforms are processed to recoverand/or retrieve relevant information. In an exemplary embodiment, thedigital sound waveforms may be processed in conjunction with other inputdata such as parameters related to user profile, e.g., usage patterns ofthe user to whom subsequent information is to be presented, geographicallocation of the device(s) as determined by Global Positioning System(GPS) and/or other techniques, other parameters, etc.

In an exemplary embodiment, processing at block 220 may includecorrelating one or more digital sound waveforms with an onlinerepository of sounds or sound models, to identify one or morecharacteristics of the sound waveforms. For example, in the exemplaryscenario 100 wherein user 110 hears a bird song 162, the sound waveformsreceived by each device may correspond to, e.g., a first audio versionof bird song 162 received by earbuds 120, a second audio version of birdsong 162 received by smartphone 130, a third audio version of bird song162 received by smartwatch 140, etc.

In an exemplary embodiment, the digital waveforms may be communicated toa single processing unit, e.g., running on any of devices 120, 130, 140,150. In an alternative exemplary embodiment, the digital sound waveformsmay be communicated to an online engine such as further describedhereinbelow, e.g., directly or via an intermediate server or processorrunning on any of devices 120, 130, 140, 150, or any other devices. Inan exemplary embodiment, the one or more digital sound waveforms may beincorporated in a digital-sound-enabled query for an online engine, andrelevant information may be recovered and/or retrieved from, e.g., theWorld Wide Web, using online search engine techniques.

It will be appreciated that relevant information may correspond to anytype of information classified as relevant to the query by the onlinesearch engine. For example, relevant information may includeidentification of characteristics of the sound waveforms (e.g., “thesong you are listening to is sung by a goldfinch”), other relatedinformation (e.g., “the goldfinch is resident in certain parts ofNorthern California during the summer time,” geographical source of thereceived sound waveforms (e.g., “goldfinch song originating from 100feet northwest”), such as may be adduced from triangulation of soundsreceived by multiple ones of devices 120, 130, 140, 150, etc., asfurther described hereinbelow.

At block 230, an output sound waveform and/or visual data may besynthesized to present the results of the processing at block 220 to theuser. In an exemplary embodiment, an output sound waveform may includean artificial voice-synthesized version of the information to bepresented, e.g., “the song you are listening to is sung by a goldfinch .. . .” In an exemplary embodiment, visual data may include relevant textor graphic data to be presented to the user on a device having adisplay. A sound waveform and/or visual data may be synthesized, e.g.,by the online engine as described hereinbelow, or such data may besynthesized locally by the devices available to the user, etc.

At block 240, the synthesized sound waveform may be output using a soundgenerator local to the user, and/or synthesized visual data may beoutput using a visual display of a device local to the user. In anexemplary embodiment, the synthesized sound waveform may be output usingactive earbuds 120. For example, in scenario 100, assuming user 110hears song 162 sung by bird 160 in real-time, active earbuds 120 mayoutput a synthesized text-to-speech rendering of information related tosong 162, e.g., “the song you are listening to is sung by a goldfinch,located 100 feet northwest of your current location,” etc.

FIG. 3 illustrates an exemplary embodiment 300 of operations performedby an audio input and/or output device locally available to the user. Inan exemplary embodiment, such a device may correspond to, e.g., activeearbuds 120, or generally to any of devices 130, 140, 150. Note FIG. 3is shown for illustrative purposes only, and is not meant to limit thescope of the present disclosure to any particular implementation of thetechniques described herein.

In FIG. 3, an input sound waveform from the user's environment isrepresented by a graphic 301 a corresponding to asound-pressure-versus-time plot of the waveform. Sound waveform 301 a isreceived by an audio input and/or output device 310, having a front-endstage corresponding to a sound transducer/digitizer block 320.

Block 320 converts sound waveform 301 a into a digital sound waveform320 a.

Block 322 performs operations resulting in the recovering or retrievingof relevant information from digital sound waveform 320 a. Inparticular, block 322 may transmit the received digital sound waveformto a central processing unit (not shown in FIG. 3) or an online engine,and optionally receive relevant information 322 a from the centralprocessing unit or online engine if device 310 is capable of presentingthe information to the user. Specific exemplary operations performed byblock 322, e.g., in conjunction with other modules with which block 322communicates, are further described hereinbelow with reference to FIG.4.

In an exemplary embodiment, device 310 may optionally include block 324for synthesizing sound based on information retrieved from block 322.Block 324 may include, e.g., a text-to-speech module for locallysynthesizing an artificial voice waveform from the information, forpresentation to the user. In an alternative exemplary embodiment, block324 may be omitted, and text-to-speech synthesis of information may beperformed remotely from device 310, e.g., by an online engine. In suchcases, the retrieved information 322 a may be understood to alreadycontain the synthesized sound information to be presented. Suchalternative exemplary embodiments are contemplated to be within thescope of the present disclosure.

At block 326, speaker 326 generates an audio output 301 b from thesynthesized sound information received, e.g., from block 322 or fromblock 324. Audio output 301 b may correspond to an output sound waveformplayed back to the user.

In view of the description hereinabove, it will be appreciated that auser of device 310 may simultaneously perceive audio originating fromtwo sources: input sound waveform 301 a originating from the “real”(extra-device 310) environment of the user, and output sound waveform301 b originating from speaker 326 of device 310. In this sense, outputsound waveform 301 b may be understood as being “overlaid” 305 or“augmenting” input sound waveform 301 a.

FIG. 4 illustrates further aspects of an audio augmented reality systemfor recovering and retrieving relevant information, e.g., describing inmore detail operations mentioned with reference to blocks 220 and 322hereinabove. Note FIG. 4 is described for illustrative purposes only,and is not meant to limit the scope of the present disclosure to anyparticular implementations or functional partitioning of the blocksdescribed. In certain exemplary embodiments, one or more of thefunctional blocks or modules shown in FIG. 4, e.g., computer 420 and anyof devices 310.n, may be integrated into a single module. Conversely,functionality performed by a single module may be partitioned acrossmultiple modules alternatively from what is shown. Such alternativeexemplary embodiments are contemplated to be within the scope of thepresent disclosure.

In FIG. 4, a plurality of audio input/output devices 310.1 through 310.Nis shown, and each device may have an architecture similar to device 310described hereinabove with reference to FIG. 3. In particular, for eachdevice 310.n (wherein n represents a generic index from 1 to N), block322, earlier described hereinabove as performing operations resulting inthe recovering or retrieving of relevant information from correspondingdigital sound waveform 320 a, is depicted. In particular, block 322.1,corresponding to block 322 for a first audio input/output device 310.1,performs digital sound processing functionality, and includes acommunications receive and transmit (RX/TX) module 410.1. Similarly,block 322.n, corresponding to block 322 for an n-th audio input/outputdevice 310.n, performs its own digital sound processing functionality,and includes a communications receive and transmit (RX/TX) module 410.n,etc. Communications between block 322.n and block 422 may be conductedover channel 322.na.

In an exemplary embodiment, block 322.1 may correspond to block 322 forearbuds 120, block 322.2 may correspond to block 322 for smartphone 130,etc. In an exemplary embodiment wherein N equals 1, only one block 322.1may be present in the system. Such alternative exemplary embodiments arecontemplated to be within the scope of the present disclosure.

In FIG. 4, module 410.n of each corresponding block 322.n communicateswith one or more other entities remote from the corresponding device310.n, e.g., over a wireless or wired channel. In an exemplaryembodiment, communications may be conducted between each module 410.nand communications module 422 of computer 420. Computer 420 maycorrespond to a central processing unit for processing audio inputand/or other input signals from devices 310.1 through 310.N. Inparticular, computer 420 may include multi-channel signal processingmodule 425 for collectively processing audio input signals and/or otherdata received from blocks 322.1 through 322.N.

In an exemplary embodiment, multi-channel signal processing module 425may include information extraction/retrieval block 428. Block 428 mayextract information from the multiple audio input signals and/or otherdata received. Block 428 may include query formulation block 428.1,which formulates query 428.1 a from the digital sound waveforms and/orother data received. Block 428 may further include results retrievalblock 428.2, which retrieves results responsive to query 428.1 a fromonline engine 430.

In an exemplary embodiment, block 428.1 is configured to formulate query428.1 a by concatenating multiple digital sound waveforms. In thissense, formulated query 428.1 a is also denoted a digital-sound-enabledquery, i.e., a query containing a digital sound waveform as one or moreof the query search terms. For example, referring to scenario 100, query428.1 a may contain multiple digital sound waveforms as query searchterms, with each digital sound waveform encapsulated as a standard audiofile (such as mp3, way, etc.). Each digital sound waveform maycorrespond to a sound waveform received by one of devices 120, 130, 140,or 150. In illustrative scenario 100 wherein bird song 162 is receivedby each of devices 120, 130, 140, 150, then formulated query 428.1 a maycontain up to four digital sound waveforms corresponding to the versionsof bird song 162 as received by each of the four devices. In alternativeexemplary embodiments, any number of digital sound waveforms may beconcatenated by block 428.1 to generated formulated query 428.1 a.

When processing digital-sound-enabled queries, online engine 430 may beconfigured to retrieve and rank online results based on similarity orcorrespondence of the online results to one or more digital soundwaveforms contained in the query. In an exemplary embodiment, relevanceof a digital sound waveform to a sound record in an online database maybe at least in part determined based on sound pattern recognition andmatching techniques, and may take advantage of techniques known in thearts of voice recognition, sound recognition, pattern recognition, etc.For example, one or more correlation metrics between a recorded soundand a candidate sound may be calculated. In an exemplary embodiment,such calculations may be additionally informed by knowledge of otherparameters, as contained in formulated query 428.1 a as describedhereinabove.

In an exemplary embodiment, other data included in formulated query428.1 a may include, e.g., an annotation of each digital sound waveformwith data identifying the device that captured the sound waveform,and/or descriptive of the circumstances under which the sound waveformwas captured. For example, a version of bird song 162 captured bysmartphone 130 may be annotated with data identifying the hardwaremodel/version number of smartphone 130, as well as positional data ofsmartphone 130 (e.g., as derived from a GPS component of smartphone130), relative positional data of smartphone 130 versus other of devices120, 140, 150, etc., velocity of smartphone 130, ambient temperature asmeasured by a temperature sensor of smartphone 130, etc. When includedas part of formulated query 428.1 a, such data may be utilized by anonline engine to more accurately identify bird song 162, as well asretrieve more relevant information.

In an exemplary embodiment, formulated query 428.1 a may further includeother data besides audio waveforms and data descriptive of suchwaveforms. For example, such data may include parameters such as userprofile and/or usage patterns of the user, geographical location of thedevice(s) as determined by Global Positioning System (GPS) and/or othertechniques, positions of the devices relative to each other, otherparameters, etc.

To facilitate the identifying and matching submitted query sounds withrelevant online results, online engine 430 may maintain sound index 434.Index 434 may include, e.g., categorized listings of online-accessiblesound models and/or sounds that are deemed relevant and/or useful insatisfying search queries containing sound files.

In an exemplary embodiment, query formulation block 428.1 may record(e.g., audio and non-audio) information received from devices 310.n toassist in assessing and predicting query formulations that will likelybe useful to the user. In an exemplary embodiment, block 428.1 mayinclude an optional machine learning module (not shown) that learns tomap input received from devices 310.n to relevant query formulationswith increasing accuracy over time.

Formulated query 428.1 a is submitted from computer 420 to online engine430, e.g., over a wired or wireless connection. In an exemplaryembodiment, online engine 430 may be an online search engine accessibleover the Internet. Online engine 430 may retrieve relevant results 430 aresponsive to query 428.1 a. Results 430 a may subsequently becommunicated by online engine 430 back to computer 420, and computer 420may then convey the results back to any of devices 120, 130, 140, 150.

In an exemplary embodiment, the user may specifically designate one ormore sounds for inclusion in a search query. For example, whilelistening to bird song 162, user 110 may explicitly indicate to thesystem (e.g., via voice command, hand gestures, text input, etc.) that aquery is to be formulated and submitted based on the received soundinput, e.g., immediately or within some predetermined time afterlistening to the sound of interest. In an exemplary embodiment, thisexplicit indication may automatically cause block 428.1 a to formulate aquery. In an exemplary embodiment, user 110 may further explicitlyspecify all or part of a query string to be included in the formulatedquery.

In an alternative exemplary embodiment, user 110 need not explicitlyindicate that a query is to be formulate and submitted based on thereceived sound input. In such exemplary embodiments, an optional machinelearning module (not shown) may “learn” an appropriate trigger point forautomatically formulating a machine-generated query 428.1 a based on theaccumulated data received.

In an exemplary embodiment, online engine 430 may include a machinelearning module 432 that learns to map queries 428.1 a to relevantresults with increasing accuracy over time. Module 432 may employtechniques derived from machine learning, e.g., neural networks,logistic regression, decision trees, etc. In an exemplary embodiment,channels 322.1 a through 322.Na may convey certain training informationto engine 430 that is useful to train machine learning module 432 ofengine 430. For example, a user identity may be conveyed to machinelearning module 432. Previously received sounds waveforms and/orretrieved results corresponding to such sound waveforms may also beconveyed to module 432. Such received data may be utilized by onlineengine 430 to train machine learning module 432 to better process andserve queries 428.1 a.

As an illustrative example, user 110 in scenario 100 may have acorresponding user identity, e.g., associated with user alias “anne123.”User alias anne123 may be associated with a corresponding user profile,e.g., identifying previous history of searches, user preferences, etc.Assuming such information is made available to train machine learningmodule 432 of search engine 430, search engine 430 may advantageouslyserve more relevant and accurate results to submitted queries.

For example, in response to a query submitted by anne123 which includesdigital sound waveforms derived from bird song 162, search engine 430may rank certain search results relating to “goldfinch” more highlybased on knowledge that user anne123 resides in a specific geographicalvicinity derived from the user profile, etc. Note the precedingdiscussion is provided for illustrative purposes only, and is not meantto limit the scope of the present disclosure to any particular types ofinformation or techniques for processing and/or determining patterns insuch information that may be employed by machine learning module 432.

FIG. 5 shows an illustrative correspondence between an exemplaryformulated query 428.1 a and exemplary retrieved results 430 a. NoteFIG. 5 is shown for illustrative purposes only, and is not meant tolimit the scope of the present disclosure to any particular types ofsounds, technical fields, query formulations, query fields, lengths orsizes of formulated queries, number or types of results, etc. Note anyof the information shown may be omitted from any particular search queryor any exemplary embodiment, depending on the particular configurationof the system. Furthermore, additional query fields not shown mayreadily be included in any particular search query or any exemplaryembodiment, and may be readily accommodated using the techniques of thepresent disclosure. Such alternative exemplary embodiments arecontemplated to be within the scope of the present disclosure.

In particular, an example formulated query 428.1 a includes severalfields as shown on left-hand side 501 of FIG. 5. In particular, theexample formulated query 428.1 a includes a first field 510 includingdigital sound waveform 510 b encapsulated as an mp3 audio file 510 a.First field 510 also includes additional attributes denoted Device 1attributes 510 c, corresponding to further parameters of a device usedto capture digital sound waveform 510 b, including type of device,sampling rate, geographical location, etc. Note the specific attributesare described herein for illustrative purposes only, and are not meantto limit the scope of the present disclosure. Example formulated query428.1 a further includes second field 511 and third field 512, havingsimilar fields including sound waveforms encapsulated as audio files,and additional device attributes.

Query 428.1 a also includes other parameters field 513, which may helponline engine 430 retrieve more relevant search results. For example,field 513 may specify an identity of a user (e.g., to whom retrievedinformation is to be presented), a profile of such a user, a previoussearch history of such a user, ambient temperature (e.g., as measured byone or more devices), etc.

Upon submission of query 428.1 a to online engine 430, query results 430a may be served responsive to query 428.1 a. Exemplary query results 430a are shown on right side 551 of FIG. 5. Note the exemplary queryresults 430 a in FIG. 5 are shown for illustrative purposes only, andare not meant to limit the scope of the present disclosure.

In particular, exemplary query results 430 a include one or more visualresults 560, including, e.g., graphic 561 and text 562 descriptive ofresults 560. For example, for the exemplary digital sound waveforms andother parameters submitted in the illustrative query 428.1 a in FIG. 5,a graphic 561 of a goldfinch bird and corresponding text 562 descriptiveof goldfinch behavior are shown. In an exemplary embodiment, visualresults 560 may be displayed on devices local to the user having visualdisplay capability, e.g., as further described hereinbelow withreference to FIG. 6.

Query results 430 a may further or alternatively include one or moreresults containing content not meant to be visually displayed to a user.For example, query results 430 a may include audio result 563, whichincludes a digital sound waveform corresponding to a speech rendition oftext 564 relevant to search query 428.1 a. Audio result 563 may be acomputer-generated text-to-speech rendition of the corresponding text,or it may be read by a human speaker, etc. In an exemplary embodiment,any audio result(s) in query results 430 a may be played back using adevice local to the user, e.g., earbuds 120 local to user 110, etc.

Audio results 563 may further or alternatively include personalizedaudio result 565, corresponding to digital sound waveforms customizedfor the user. For example, in the exemplary embodiment shown, a user'sfavorite song 566 (e.g., as determined by user profile parameters assubmitted in query 428.1 a or elsewhere) may be mixed 567 with agoldfinch song 568 (e.g., the bird song as extracted from any of thedigital sound waveforms such as waveform 510 b submitted in query 428.1a, or from a digital sound waveform associated with audio results 563 orany other results in query results 430 a).

In an exemplary embodiment, to train machine learning algorithms runningin online engine 430 to retrieve results with increasing relevance toformulated queries, user feedback may be received in the audio augmentedreality system. For example, when presented with any of visual results560 and audio results 563 (including personalized audio results 565),user 110 may select one of the presented results to retrieve furtherinformation relevant to the results. For example, when viewing text 562in visual results 560, user 110 may express interest in learning moreabout goldfinch migration by, e.g., submitting another query for“goldfinch migration” to online engine 430 through the availabledevices, or otherwise indicating that result 562 was deemed relevant bythe user. Alternatively, when listening to a synthesized voice rendering564 of audio results 563, user 110 may express interest in thesynthesized audio information by, e.g., increasing the volume of theaudio output, or otherwise submitting an additional query (e.g., throughvoice command or many entry of additional text) related to the retrievedresults. Upon receiving user feedback indicating positive relevance ofthe retrieved results, online engine 430 may further adapt and/or trainthe underlying machine learning algorithms, e.g., executed by machinelearning module 432, to retrieve relevant results responsive toformulated queries.

FIG. 6 illustrates further aspects of the augmented reality system forvisually displaying information relevant to the received digital soundwaveforms. Note FIG. 6 is described for illustrative purposes only, andis not meant to limit the scope of the present disclosure to anyparticular implementations or functional partitioning of the blocksdescribed.

In FIG. 6, computer 420, e.g., corresponding to computer 420 describedwith reference to FIG. 4, is further communicatively coupled to one ormore devices 610.1 through 610.M, each having a visual display, anarbitrary device being denoted herein as 610.m. In particular, any ofdevices 610.1 through 610.M may correspond to any of devices 130, 140,150 earlier mentioned hereinabove, as long as such device has a visualdisplay, e.g., smartphone 130, smartwatch 140, laptop 150, etc.Alternatively, any of devices 610.1 through 610.M may be a stand-alonedevice having no audio input capability, or otherwise receiving no audioinput for use by the augmented reality system. Each device 610.mincludes a communications RX/TX block 620 for communicating with block422 of computer 420, e.g., directly, or via another intermediary device(not shown) such as a router, server, etc.

In an exemplary embodiment, computer 420 includes visual informationpresentation block 630 coupled to results retrieval block 428.2. Inparticular, retrieved results 430 a may be formatted or otherwisecollected for visual presentation and display by block 630, whichtransmits the formatted and/or collected results via communicationsblock 422 to devices 610.1 through 610.M for visual display. Forexample, in a scenario wherein device 610.1 corresponds to a laptopcomputer with a display, then block 630 may format one or more retrievedresults based on visual result 560 shown in FIG. 5, and subsequentlytransmit such formatted results to the laptop computer for display.

FIG. 7 illustrates an exemplary application of the techniques describedhereinabove with reference to an audio augmented reality system tospecific scenario 100. Note FIG. 7 is shown for illustrative purposesonly, and is not meant to limit the scope of the present disclosure toany particular scenarios shown.

In FIG. 7, at block 210.1, a sound waveform, e.g., corresponding to birdsong 162, is received by a plurality of devices 120, 130, 140. Devices120, 130, 140 digitize the received sound waveforms into digital soundwaveforms.

At block 220.1, the digital sound waveforms are transmitted by any orall of devices 120, 130, 140 to a central processing unit for remoteprocessing. Note the central processing unit may be separate fromdevices 120, 130, 140, or it may be implemented on one or more ofdevices 120, 130, 140. In an exemplary embodiment, the centralprocessing unit may perform such functions as described with referenceto computer 420 in FIG. 4.

In an exemplary embodiment, query formulation may be performed bycomputer 420, e.g., as described with reference to block 428.1hereinabove, and as also shown in FIG. 7. In particular, at block 428.1,a query may be formulated and submitted by computer 420 to online engine430 to perform an online search. The query may include digital soundwaveforms and other data, e.g., as described hereinabove with referenceto FIG. 5.

As shown in FIG. 7, an exemplary online engine 430.1 may receive theformulated and submitted query from block 428.1. Online engine 430.1 mayinclude machine learning module 432.1 configured to map queries 428.1 ato relevant results with increasing accuracy.

In the specific scenario shown, module 432.1 is specifically configuredto estimate the originating location of a sound waveform received bydevices 120, 130, 140, using sound triangulation techniques. Inparticular, given that the same bird song 162 generates three distinctsound waveforms, corresponding to sound waveforms received at threeseparate devices, triangulation may be performed using the digital soundwaveforms to determine the position of bird 160 with respect to thedevices, and hence the user.

For example, sound triangulation may account for the relative delays ofbird song 162 within each digital sound waveform (e.g., assuming eachdevice is equipped with an accurate time reference as may be derivablefrom a GPS signal, etc.), frequency shifts in the received sounds due tomotion of the source (e.g., bird 160) or of devices 120, 130, 140, etc.

Based on sound triangulation as described hereinabove, machine learningmodule 432.1 may be configured to triangulate the source of bird song162, and hence the position of bird 160 relative to the user. Machinelearning module 432.1 may further be configured to extract a standardversion of bird song 162 from the multiple versions received, e.g., byaccounting for any calculated frequency shifts and delays. Such astandard version of bird song 162 may then be correlated with soundmodels or samples such as might be available on the World Wide Web (WWW)440, e.g., as may be referenced by sounds index 434 of online engine430.1 as earlier described hereinabove with reference to FIG. 4.Following correlation, bird song 162 may be identified as correspondingto one or more particular bird species, which information may thenfurther be used to extract relevant information as query results, e.g.,results 430 a as indicated in FIG. 5.

Based on the retrieved information, sound synthesis may be performed atblock 710, and visual synthesis may be performed at block 712. Forexample, exemplary visual results may be as described with reference toresults 560 in FIG. 5, while exemplary audio results may be as describedwith reference to results 563 or 565. In an exemplary embodiment, blocks710, 712 may be individually or jointly implemented at either onlineengine 430.1, or at computer 420.

Following sound synthesis at block 710, at block 240.1, the synthesizedsound may be output to the user, e.g., through earbuds 120. In anexemplary embodiment wherein, e.g., user 110 listens to the output ofearbuds 120 at the same time as he or she listens to bird song 162, thesynthesized sound output of earbuds 120 may constitute audio augmentedreality, wherein the user receives real-time synthesized audioinformation relevant to sounds that are otherwise perceived naturallythrough the environment.

Following visual synthesis at block 712, at block 240.2, the synthesizedvisual information may be output to the user, e.g., through smartphone140. The synthesized visual information may identify bird 160 to theuser, as well as provide other relevant information.

FIG. 8 illustrates an exemplary embodiment of a method 800 according tothe present disclosure. Note FIG. 8 is shown for illustrative purposesonly, and is not meant to limit the scope of the present disclosure toany particular method shown.

In FIG. 8, at block 810, a query comprising a first digital soundwaveform from a first source and a second digital sound waveform from asecond source is received. In an exemplary embodiment, the first sourceand second source may correspond to distinct audio input devices havingseparate locations, e.g., any two of the plurality of devices 120, 130,140, 150, etc., described with reference to FIG. 1. The first digitalsound waveform may be recorded by the first source, and the seconddigital sound waveform may be recorded by the second source.

At block 820, at least one online result relevant to both the first andsecond digital sound waveforms is retrieved. In an exemplary embodiment,the first and second digital sound waveforms correspond to differentrecordings of the same sound event received by different sources, e.g.,separate digital sound recordings of bird song 162.

At block 830, a synthesized sound corresponding to the at least oneonline result is generated.

At block 840, the generated synthesized sound is served in response tothe received query.

FIG. 9 illustrates an exemplary embodiment of an apparatus 900 accordingto the present disclosure. In FIG. 9, apparatus 900 includes a queryprocessing module 910 configured to receive a query comprising a firstdigital sound waveform from a first source and a second digital soundwaveform from a second source, a search engine 920 configured toretrieve at least one online result relevant to both the first andsecond digital sound waveforms, a synthesis module 930 configured togenerate a synthesized sound corresponding to the at least one onlineresult, and a transmission module 940 configured to serve the generatedsynthesized sound in response to the received query.

In an exemplary embodiment, structure for implementing module 910,search engine 920, module 930, and module 940 may correspond to, e.g.,one or more server computers running remotely from devices used tocapture the first and second digital sound waveforms, and communicatingwith such devices using a network connection, e.g., over the Internet.In an alternative exemplary embodiment, structure for implementingmodule 910 and search engine 920 may correspond to one or more servercomputers, while structure for implementing module 930 and module 940may correspond to one or more processors residing on one or more devicesused to capture the first and second digital sound waveforms. Inparticular, generating the synthesized sound may be performed at theserver and/or at a local device. Such alternative exemplary embodimentsare contemplated to be within the scope of the present disclosure.

FIG. 10 illustrates an exemplary embodiment of a device 1000 accordingto the present disclosure. In FIG. 10, a computing device 1000 includesa memory 1020 holding instructions executable by a processor 1010 to:receive a query comprising a first digital sound waveform from a firstsource and a second digital sound waveform from a second source;retrieve at least one online result relevant to both the first andsecond digital sound waveforms; generate a synthesized soundcorresponding to the at least one online result; and serve the generatedsynthesized sound in response to the received query.

In this specification and in the claims, it will be understood that whenan element is referred to as being “connected to” or “coupled to”another element, it can be directly connected or coupled to the otherelement or intervening elements may be present. In contrast, when anelement is referred to as being “directly connected to” or “directlycoupled to” another element, there are no intervening elements present.Furthermore, when an element is referred to as being “electricallycoupled” to another element, it denotes that a path of low resistance ispresent between such elements, while when an element is referred to asbeing simply “coupled” to another element, there may or may not be apath of low resistance between such elements.

The functionality described herein can be performed, at least in part,by one or more hardware and/or software logic components. For example,and without limitation, illustrative types of hardware logic componentsthat can be used include Field-programmable Gate Arrays (FPGAs),Program-specific Integrated Circuits (ASICs), Program-specific StandardProducts (ASSPs), System-on-a-chip systems (SOCs), Complex ProgrammableLogic Devices (CPLDs), etc.

While the invention is susceptible to various modifications andalternative constructions, certain illustrated embodiments thereof areshown in the drawings and have been described above in detail. It shouldbe understood, however, that there is no intention to limit theinvention to the specific forms disclosed, but on the contrary, theintention is to cover all modifications, alternative constructions, andequivalents falling within the spirit and scope of the invention.

1. A method comprising: receiving a query comprising a first digitalsound waveform from a first source, a second digital sound waveform froma second source, and preference parameters of a user; retrieving apreferred sound file of the user as identified based on the preferenceparameters, and at least one online result relevant to both the firstand second digital sound waveforms; generating a synthesized soundcomprising a mix of the preferred sound file of the user and the atleast one online result relevant to both the first and second digitalsound waveforms; and serving the generated synthesized sound in responseto the received query.
 2. The method of claim 1, the received querycomprising at least three digital sound waveforms, each sound waveformbeing received by a device having a distinct location, the retrievingthe at least one online result comprising: calculating a position of asource object based on the at least three digital sound waveforms, thecalculating comprising determining a relative delay amongst the at leastthree digital sound waveforms, and determining relative positions of thedistinct locations of the devices.
 3. The method of claim 2, thegenerating the synthesized sound comprising generating a text-to-speechrendition of the calculated position.
 4. The method of claim 1, theretrieving the at least one online result comprising: correlating eachof the first and second digital sound waveforms with at least one onlinesound file, each sound file having corresponding identificationinformation; the at least one online result comprising identificationinformation corresponding to a sound file being the most highlycorrelated with the first and second sound waveforms.
 5. The method ofclaim 1, the preference parameters of the user comprising a preferredmusic genre of the user, the preferred sound file comprising a musicfile containing music of the preferred music genre.
 6. The method ofclaim 5, the at least one online result comprising a sound filecorresponding to an object characterized by the first digital soundwaveform and the second digital sound waveform, the generatedsynthesized sound comprising an audio mix of the sound filecorresponding to the object and the music file.
 7. The method of claim1, further comprising: generating a synthesized visual outputcorresponding to the at least one online result; and serving thegenerated synthesized visual output in response to the received query.8. The method of claim 1, further comprising: receiving an indication ofuser approval of the served generated synthesized sound; and based onthe received indication of user approval, updating a machine learningalgorithm used to retrieve the at least one online result relevant tothe received query.
 9. The method of claim 1, the first and seconddigital sound waveforms comprising at least one digital sound waveformcaptured by an active earbud, the active earbud further configured toreceive and play back the generated synthesized sound served in responseto the received query.
 10. The method of claim 1, the at least onedigital sound waveform comprising: at least one digital sound waveformreceived by a smartphone; and at least one digital sound waveformreceived by a smart watch.
 11. An apparatus comprising: a queryprocessing module configured to receive a query comprising a firstdigital sound waveform from a first source, a second digital soundwaveform from a second source, and preference parameters of a user; asearch engine configured to retrieve a preferred sound file of the useras identified based on the preference parameters, and at least oneonline result relevant to both the first and second digital soundwaveforms; a synthesis module configured to generate a synthesized soundcomprising a mix of the preferred sound file of the user and the atleast one online result relevant to both the first and second digitalsound waveforms; and a transmission module configured to serve thegenerated synthesized sound in response to the received query.
 12. Theapparatus of claim 11, the received query comprising at least threedigital sound waveforms, each sound waveform being received by a devicehaving a distinct location, the search engine further configured to:calculate a position of a source object based on the at least threedigital sound waveforms, the calculating comprising determining arelative delay amongst the at least three digital sound waveforms, anddetermine relative positions of the distinct locations of the devices.13. The apparatus of claim 12, the synthesis module further configuredto generate a text-to-speech rendition of the calculated position. 14.The apparatus of claim 11, the search engine further configured toretrieve the at least one online result by correlating each of the firstand second digital sound waveforms with at least one online sound file,each sound file having corresponding identification information; the atleast one online result comprising identification informationcorresponding to a sound file being the most highly correlated with thefirst and second sound waveforms.
 15. The apparatus of claim 11, thepreference parameters of the user comprising a preferred music genre ofthe user, the preferred sound file comprising a music file containingmusic of the preferred music genre.
 16. The apparatus of claim 15, theat least one online result comprising a sound file corresponding to anobject characterized by the first digital sound waveform and the seconddigital sound waveform, the generated synthesized sound comprising anaudio mix of the sound file corresponding to the object and the musicfile.
 17. The apparatus of claim 11, the first and second digital soundwaveforms comprising at least one digital sound waveform captured by anactive earbud, the active earbud further configured to receive and playback the generated synthesized sound served in response to the receivedquery.
 18. The apparatus of claim 11, the at least one digital soundwaveform comprising: at least one digital sound waveform received by asmartphone; and at least one digital sound waveform received by a smartwatch.
 19. A computing device including a memory holding instructionsexecutable by a processor to: receive a query comprising a first digitalsound waveform from a first source, a second digital sound waveform froma second source, and preference parameters of a user; retrieve apreferred sound file of the user as identified based on the preferenceparameters, and at least one online result relevant to both the firstand second digital sound waveforms; generate a synthesized soundcomprising a mix of the preferred sound file of the user and the atleast one online result relevant to both the first and second digitalsound waveforms; and serve the generated synthesized sound in responseto the received query.
 20. The device of claim 19, the memory furtherholding instructions executable by the processor to: receive anindication of user approval of the served generated synthesized sound;and based on the received indication of user approval, update a machinelearning algorithm used to retrieve the at least one online resultrelevant to the received query.